Question

i will give a medal
Find the value for x that makes the equation 1.5x+6=3(2.5x-6) true. plzz show me how to do this

Answer 1

Firstly, we need to expand the brackets on the right. Can you do that for me?

Answer 2

1.5x+6=3x-15 @tom982

Answer 3

Not quite.
\[3(2.5x-6)=3*2.5x-3*6\]
Do you see why it's wrong?

Answer 4

ohhhh distributive property?

Answer 5

@tom982

Answer 6

Yep :)

Answer 7

1.5x + 6 = 7.5x - 18 (we multiply the values inside the brackets)
6 + 18 = 7.5x - 1.5x (we transfer the 18 on the other side and 1.5x on the one)
24 = 6x (sum up both numbers)
4 = x (divide)

This should help :)

Answer 8

ooops wrong thing

Answer 9

i wrote it wrong

Answer 10

First u need to expand the bracket.
second shif all the x to the left hand side.
Then divide both sides.
\[1.5x+6=3(2.5x-6)\]

Answer 11

\[1.5x+6=7.5x-18\]

Answer 12

\[1.5x-7.5x=-18-6\]

Answer 13

\[-6x=-24\]

Answer 14

Then divide -6 on both sides.

Answer 15

\[\frac{ -6 }{ -6 }x=\frac{ -24 }{ -6 }\]

Answer 16

\[x=?\]solve it @tarap0123

Answer 17

4 right?

Answer 18

@MARC_

Answer 19

great

Answer 20

thank you soooo much @MARC_

Answer 21

and also thank you @tom982

Answer 22

yw! @tarap0123

Answer 23

My pleasure.